PHOTO: A black BMW sedan driven by a drive-by shooter is seen on Saturday, May 24, 2014, in Isla Vista, Calif.

The murderous spree ended when Elliot Rodger crashed his car with a bicyclist he had struck on his car windshield. He was found with a gunshot to his head. Sheriff Bill Brown said, "It would appear he took his own life."

Dylan Fontillas was in the I V Mart when Rodger began firing, killing Christopher Martinez.

Fontillas, 20, said he looked the suspect straight in the eyes during the shooting and said "he almost kind of had a smirk like he was excited about it or he was happy about it. It's pretty scary. It's pretty disturbing."

Fontillas said he hit the floor when the shooting began. He grabbed his cell phone and called his mother because he thought he was going to be killed.

Police said three guns were recovered from Rodger's car. Police said he had more than 400 rounds of ammunition.

"All were legally purchased from federally licensed dealers and all were registered to the suspect," the sheriff said.

Brown said cops have had three previous contacts with Rodger before Friday's shooting, including when a member of Rodger's family asked police to check on him because of alarm over his behavior and videos. Brown said the cops found no reason to take further action on Rodger.

One of the other incidents occurred in January when he made a citizen's arrest of his roommate for allegedly stealing three candles, and again in July 2013 when he claimed he had been assaulted. Police determined that Rodger may have been the aggressor, Brown said.

Rodger was being treated by multiple therapists and was a student at Santa Barbara City College, said family lawyer Alan Schifman.

The lawyer said that Rodger’s family was “devastated.”

“They want to send the deepest condolences to all the victims' families involved at this time,” he said.

Seven people - including Elliot Rodger - were killed and another 13 people were injured in the shooting in the Isla Vista neighborhood Friday, said Santa Barbara County Sheriff Bill Brown, who repeatedly referred to the shooting as a planned mass murder.

"It’s just unfortunate that these kinds of circumstances occur," said Brown.

Concerns Over Rodger's Well Being Reported

Schifman said in recent weeks that Rodger’s parents were concerned for their son's well being and reported his disturbing YouTube videos to police, which lead to an investigation. According to Schifman, police interviewed Rodger and found him to be “polite and kind.” He did not specify which law enforcement division conducted the interview.

A social worker also contacted police about Rodger last week, said Schifman.

In a YouTube video titled "Elliot Rodger's Retribution," Elliot Rodger sits in the driver's seat of a car as he promises "retribution" and discusses his "loneliness, rejection and unfulfilled desires."

"Girls gave their affection and sex and love to other men but never to me," he said in the video. He added that it would be his last video.

Schifman said Rodger was diagnosed as being a high-functioning patient with Asperger syndrome and had trouble making friends.

"There was an incident probably a year and a half ago where he was...he fell from a balcony at a party or was thrown off of it. I think he was probably a victim from my understanding of bullying throughout his life...
I'm sure that had played a role in the terrible consequences from last night," the lawyer said.

Witness Call Shooting Chaotic and Surreal

Witnesses described the shooting to ABC affiliate KEYT-TV as chaotic and surreal, with many in the crowd mistaking the gunfire for fireworks. One man said that he saw shots fired from a BMW, fatally hitting one woman and critically injuring another woman.

Sierra Swartz told KEYT-TV that the suspect fired at her and that she initially thought the pistol was an air gun.

“Before I started walking the other way he just lifted it up and … he shot and I felt like I just felt the wind pass right by my face,” she said. “I went to a random person’s house and I just ran inside and I was like ‘Honestly, like someone just shot at me.’”